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Roller Bearings
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Cylindrical Roller Bearings:-
In this type of bearings, the rollers race tracks are essentially
cylindrical, however they may be ground slightly curved in order to achieve
thereby small degree of flexibility.
The rollers are guided between two lips on either the inner race or the outer
race. Other types provided with either no lip, one lip or two lips, according
to the function which the bearing has to perform. Ball Bearings have a point
contact on the races whereas all types of cylindrical roller bearings have a
line contact.
Due to line contact the cylindrical roller bearings have a very high radial
load carrying capacity as compared to ball bearings of the same size. Due to
their separable design, cylindrical roller bearings are more convenient for
mountings than ball bearings. |
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Self Aligning Spherical Roller Bearings:-
This type of bearing consists of spherical outer race and inner race
with two tracks, a cage, and a complement of spherical shaped rollers. Just
like double row self aligning ball bearings too are not sensitive to
misalignment and they can adjust themselves to shaft deflections.
Due to the principle, sizes and shaft of rollers and accuracy with which they
are guided these bearings have un axial capacity. The
design of this bearing permits radial load and heavy thrust load in either
direction. |
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